11/9=4/z

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Solution for 11/9=4/z equation: 


D( z )

z = 0

z = 0

z = 0

z in (-oo:0) U (0:+oo)

11/9 = 4/z // - 4/z

11/9-(4/z) = 0

11/9-4*z^-1 = 0

-4*z^-1 = -11/9 // : -4

z^-1 = 11/36

-1 < 0

1/(z^1) = 11/36 // * z^1

1 = 11/36*z^1 // : 11/36

36/11 = z^1

z = 36/11

z = 36/11

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